Centrifugal rock crusher



A` D. s-mnzaslil.l l,857,539

CENTR IFUGAL ROCK CRUSHER Original Filed April 22, 1929 2 Sheets-Sheet 2 INI/ENTOR. ,4L van' 0. HADSEL .A :a n. Hausnr., or saar n f cisco, 'canrroanral CENTRIIE'UGAL ROCK" CB/USHER Application med-April 22, 1929, Serial No. 357,190. Renewed March 15, 19M.

My invention relates to improvements in centrifugal' rck crushers, and it consists in the combinations, constructions, and arrangements hereinafter described and claimed.

e An object of my invention is to provide a centrifugal rock crusher which is continuous hit the blocks at right angles to the planes F of the blocks. This construction not only utilizes all of the force in breaking the rocks,

but tends to do away with the abrasive action of the rocks upon the blocks caused by the lrocks striking the blocks a glancing blow. The wearing away of the .blocks is materially decreased by this arrangement.

I' haye found that heavy blocks of iron chilled on the face receiving the blows of the rocks forms the best means for withstanding the wear of a continuous stream of rocks striking them. The blocks are suspended. from their tops by adjustable hooks so that' the blocks may be changed in position as certain portions of their faces become worn. In this way the life of each block is materially increased.

The entire supporting of theblocks at their upper edges provides a clear space beneath the blocks for receiving the crushed rock. lf the blocks were supported at their bottoms, the pockets thus formed would quickly be lilled with crushed rock. and would interfere with the etlicient operation of the device.

l have found that the rock-throwing member is subject to eat wear unless provision is made for handling the rocks. The thrower is provided with a number of receptacles or pockets that receive and hold some of the rock. This rock acts as a shock absorber for additional rock passing throughl the thrower and prevents this latter rock from wearing away the sides of the thrower. l

Other objects and advantages will appear as thespecication proceeds, and the novel features will be .particularly pointed out in the appended claims.

My invention .is illustrated' in the accompanying drawings in which:

Figure l is a top plan viewof the device,` at portions being broken away for clarity;

Figure 2is a vertical vsection through the device, certain parts being shown in elevation;

Figure 3 shows a motor driven rock-throw-A eo ing member;

Figure ,.4 is a sectionfalong the line d-d of Figure 3; and Figure 5 shows by the rock. v

In carrying o ut my invention, l provide a housing l which in the present formv of the device is octagonal in crossy section. This housing is covered byv a roof 2 supported by p radiallyfextending Lbeams 3, A central roc chute 4 extends through the roof 2, anda pile of rock 5 is gradually fed into the chute.

The chute drops the rock into the center of a runner indicated generally at 6 (see Figure 4 This runner has bottom and top walls 7, 75 s1de walls 8, and end walls 9. The walls 8 and 9 /do not extend throughout the entire lengths and sides of the runner, but terminate short of certain of the ends for providing openings l1 through which the rock passes when it is 80 thrown from/the runner.

rlhe runner 6 is rotated at approximately 450 R.P. M. which isat a sucient speed to cause the rock to leave the ends of the runner at a tangent. I have found that the rotation of the runner will cause the rock to dig into` the side walls 8 at two places, one near the center of the runner as indicated b the letter X and the other near the end of t e runner as indicated by the letterY. I have provided no two transversely-extending partitions 1Q for forming pockets A and B. Rock is received in these pockets and is kept there. Any'additional rock will strike the rock already re-l tained in the pocket and will wear away this 'rock instead of the side walls 8.

The end walls 9 cooperate with the sid walls 8 for providing two other pockets Cl and D. Rock is held stationary in these pockets and will act in the same maniier as the how the blocks arel worn 'l rockin the pockets A and B tor preventing a wearing action upon the side walls 8.

ylhe partitions carry removable plates 12. 'llhese plates are subject to wear as thet rock passes through the runner and may be s changed from time to time.. '.lhe end walls 2 also' carry plates 13 that are removably secured to the end walls by bolts 14., 'llhe plates 13 have rounded ends 15 provided withconcaveedges 16. The rock in leaving the runner is guided centrally between the topand ,bottoni plates 7 by the concave edges 16.y

The rock, as already stated leaves the runner in a path that is tangent to the circular' path taken by the ends ci the runner. l have arranged breaker blocks i7 (see Figure'l) Y. faces i8 chilled to a depth of approximately struck by the roc an inch and a halt., Fach block weighs in .the neighborhood of six hundred pounds, and therefore will be practically stationary when Fach block 17 is provided with leur recesses 19 and has openings'20 leading `troni the recesses for receiving hooks 21 (see Figure 2). The hooks are passed through the openings 22 in the roof 2 (see Figure 1) and have their ends threaded for adjustably receiving nuts 23 (see Figure 2).. The blocks han downwardly at an angle tor directing roc that strikes them downwardly.

A larger opening 24 (see Figure 1) is disposed between each set of openings 22. A

rope is passed down through this opening for raising the block into a new position,

' whereupon the nuts 23 may be adjusted tor holding the block in its new position.

In Figure 5 l show four positions of one block 17 with its face 18 facing-toward the front. When the block is new, it will be worn along the area E enclosed by the dotted lines. The block 17 is then raised for causing a new area F to be worn. A third raising will pre sent thearea G, which will be likewiseworn.

After this the block is turned through ninety degrees so asftodisposeithe areas E, F and G at the'bottom of the block. The area H will now be worn, and after two adjustrnents the areas J` and K will be worn. The block is then turned through another ninety degrees, which will wear away a. new area L after the three adjustments have been made. Onemore swinging of the block will present the area M. When this is worn away,

the block is discarded and a new one takes its place. The areas will overlap each other,

and in this way practicallyv the entire surface 18 of the block is used.

From the foregoing description of the vak assunse rious parts or the device, the operation thereot may be readilyv understood.

Rock is ted into the chute l and drops upon the runner 6. From here it is thrown against the blochs 17 in such a way that the rocks willstrike the faces 18 at right angles. rllhe blocks 17 are so positioned aswto cause all of the rock to strike some block. Figure l shows the. blocks overlapping,slightly.

rlFhe speed ot the runner has been adjusted so that the rock will strie the bloclrs at a certain velocity which is suicient for break-1 ing therock into small pieces. beneath the blocks is -tree, and the crushed rock will build up sloping `banlrs ot roel: 25, This roch will feed down into .an outlet chute 26 by gravity, and will be dropped ,upon a conveyor ,belt 27 that carries the roclrto any place desired. I

ln Figures 1 and 2 ll show the runner has being rotated by a shaft 28 "lhe shaft in turn carries a pulley 22, and the pulley is rotated by a belt 80.

ln igure 3 il show the runner li as being rotated by a motor 8l. lin all other respects the torni ci the device shown in Figure 3 is identical. to the torna described.

The space f The machine is continuous in operation,

and it is only necessary to change the ositions or the bloclrs as certain portions or the .surfaces 18 become worn and then to remove the bloclrs troni time to timev as necessary.

Although l have shown several embodiments ol my invention, itis to be understood that the same is susceptible oi various changes, and l reserve the right to employ such changes as may come within the scope ot the invention as claimed ll claim: i

l. ln a centrifual rock crusher a runner lor receiving roes centrally and tor discharging thern eripherall said runner having substantie y parallel! side walls with `poz'zlxets termed therein :for holding a' layer of rock that will prevent roch from strikin the walls, said pockets i ng'torined by aritions and end walls.`

circumferentiall around said runner and ing positioned or receivingthe impact vof all of the rocks and being slightly inclined vfor directin the broken rocks downwardly,`

and adjusta leineans for supporting all of said blocks solely at their tops.

a. rotatab e 'rameau ing positioned for receiving the impact of all of the rocksvand being slightly inclined for directing the broken rocks downwardly, and adjustable means for supportin all vof said lblocks solely at their topssaid locks bein movable into four different positions on sai means.

5. In a rock machine of the character described,l a breaker block means for dischargin rocks therea ainst with sufficient orce to reak the roc into particles upon impact, and means for supporting said block entirely from the top with freedom of swinging motion,`said block normally being held stationary by its own weight when the rocks contact therewith.

" 6. ln a rock crusher oie the character dei scribed, a revolvably mounted runner having ysubstantially parallel walls, means for feeding rocks thereinto, means for revolving the runner whereb v the rocks are discharged from the ends o the runner, and stops'formed adjacent to the trailing wall of the' runner allowing a number of rocks to lodge therebehind so asto serve as a protecting cushion for the trailing wall.

4'2'. ln a rock crusher of the character described, a channel-shaped revolvably mounted runner, means for axially feeding rocks thereinto, 4means for revolving the runner whereby the rocks are discharged from the ends of the runner, and stops secured to the parallel walls of the runner allowing a number of rocks to lodge therebehind so as to serve as a protecting cushion for the trailing walls. f

8. In a rock Crusher of the character described, t a channel-shaped revolvably mounted runner, means for feeding rocks thereinto, means for revolving the runner whereby the rocks are discharged from the a layer of rock so as to serve as a rotecting cushion for the trailing wall of t e runner toward the ends of the runner.

' ALVAH D.` SEL.

lradii of the center of rotation for retaining and for retarding the movement of the rock -liee ends of the runner, and stops secured to the parallel walls of the runner allowing a number of rocks to lodge therebehind so as .to serrlese as a protecting cushion for' the trailing wa v 9. In a centrifugal rock crusher, a rotatable runner for receiving rocks centrally and for throwing them tangently from the ends of the runner, and a lurality of breaker blocks anranged circum erentially around said runner and being positioned for receiving the impact of all of the rocks and being slightly inclined w'ith respect to a vertical plane for directing the broken rocks downwardly.

10. In a centrifugal rock crusher, a rotatable runner or receiving rock and for throwing it tangentially from the ends of the runner, said-runner includin obstructions extending at substantially right angles to the lne :so i 

